<template>
  <div>
    <div id="slider" class="mui-slider">
      <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-slider-indicatorcode mui-segmented-control mui-segmented-control-inverted">
        <div class="mui-scroll">
          <a :class="['mui-control-item', item.id == 0 ? 'mui-active': 0]" 
              v-for="item in cates"
             :key="item.id"
             @tap="getPhotoListCateId(item.id)">
            {{ item.title }}
          </a>
        </div>
      </div>
    </div>
    <ul class="photo-list">
      <router-link
       v-for="item in list" 
       :key="item.id"
       :to="'/home/photoinfo/'+item.id"
       tag="li">
        <img v-lazy="item.img_url">
        <div class="info">
          <h1 class="info-title">{{ item.title }}</h1>
          <div class="info-body">{{ item.zhaiyao }}</div>
        </div>
      </router-link>
    </ul>
  </div>
</template>
<script>
import mui from '../../lib/mui/js/mui.min.js'
import { Toast } from 'mint-ui'

export default {
  data(){
    return{
      cates: [],
      list: []
    }
  },
  created(){
    this.getAllCategory()
    this.getPhotoListCateId(0)
  },
  mounted(){
    mui('.mui-scroll-wrapper').scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods:{
    getAllCategory(){
      this.axios.get('api/getimgcategory')
      .then( response => {
        response.data.message.unshift({ title: '全部', id: 0 })
        this.cates = response.data.message
        // console.log(response)
      })
      .catch( error=> {
        console.log(error)
        Toast('获取图片分类失败')
      })
    },
    getPhotoListCateId(cateId){
      this.axios.get('api/getimages/'+cateId)
      .then( response =>{
        this.list = response.data.message
        console.log(response)
      })
      .catch( error =>{
        console.log(error)
        Toast('获取图片列表失败')
      })
    }
  }
}
</script>
<style lang="scss" scoped>
  *{
    touch-action: pan-y;
  }
  
  .photo-list{
    list-style:none;
    margin:0;
    padding:10px;
    padding-bottom:10px;
    li{
      background-color: #ccc;
      text-align:center;
      margin:0 0 10px;
      box-shadow:0 0 9px #999;
      position:relative;
      img{
        width:100%;
        vertical-align: middle;
      }
      img[lazy=loading] {
        width: 40px;
        height: 300px;
        margin: auto;
      }
      .info{
        position:absolute;
        background-color: rgba(0,0,0,.4);
        bottom:0;
        color:#fff;
        text-align:left;
        max-height:84px;
        .info-title{
          font-size:14px;
        }
        .info-body{
          font-size:13px;
        }
      }
    }
  }
</style>
